Use este identificador para citar ou linkar para este item: http://repositorio.ufla.br/jspui/handle/1/55698
Registro completo de metadados
Campo DCValorIdioma
dc.creatorTeixeira, Ronaldo Soares-
dc.creatorBufalino, Lina-
dc.creatorTonoli, Gustavo Henrique Denzin-
dc.creatorSantos, Sergio Francisco dos-
dc.date.accessioned2022-12-15T19:10:12Z-
dc.date.available2022-12-15T19:10:12Z-
dc.date.issued2022-
dc.identifier.citationTEIXEIRA, R. S. et al. Coir fiber as reinforcement in cement-based materials. In: RANGAPPA, S. M. et al. (org.). Advances in Bio-Based Fiber - Moving Towards a Green Society. [S.I.]: Elsevier, 2022, p. 707-739. DOI: https://doi.org/10.1016/B978-0-12-824543-9.00008-6.pt_BR
dc.identifier.isbn978-0-12-824543-9pt_BR
dc.identifier.urihttp://repositorio.ufla.br/jspui/handle/1/55698-
dc.identifier.urihttps://doi.org/10.1016/B978-0-12-824543-9.00008-6-
dc.descriptionThe disposal of coconut waste in many coastal habitats worldwide is an enormous environmental problem. A valorization alternative suggests coir fibers as attractive reinforcements of many kinds of cement-based composites. The features of the raw or enhanced fibers, the compatibility between the matrix and the reinforcement phases, and the production parameters are critical for developing high-performance composites. Coir technological fibers consist of fiber bundles, phloem, and parenchyma cells. The relatively high lignin level (27%–35%) provides coir fibers great weather, fungal and bacterial resistance, and elongation at break. It has natural compatibility with cement because of relatively low levels of soluble sugars. However, water or NaOH soaking pretreatments of coir fibers release soluble sugars that hinder cement hydration, keep cellulose integrity, enhance fiber morphology, and improve chemical compatibility and interface between the matrix and reinforcement. Pressed coir-reinforced cemented-bonded fiberboards and wool boards exhibit remarkable physical strength compared to commercial products and based on quality standards. Still, the production process demands adjustments to meet mechanical strength requirements. Extruded composites reinforced with 1% and 2% of coir fibers were compared to neat cement regarding rheological, mechanical, and physical properties. The 2% coir fiber reinforcement exhibited ram pressure 38% higher compared to the neat cement paste. Accelerate aging by 200 cycles improved the modulus of rupture and water absorption of the extruded 2% reinforced composites because of the effective cement hydration, which filled the pores and densified the material structure, improving the fiber/matrix ratio.pt_BR
dc.languageenpt_BR
dc.publisherElsevierpt_BR
dc.rightsrestrictAccesspt_BR
dc.subjectRheological testpt_BR
dc.subjectCoir fiber - Mechanical propertiespt_BR
dc.subjectCoir fiber - Physical propertiespt_BR
dc.subjectExtrusion processpt_BR
dc.subjectReologiapt_BR
dc.subjectFibra de coco - Propriedades mecânicaspt_BR
dc.subjectFibra de coco - Propriedades físicaspt_BR
dc.subjectExtrusãopt_BR
dc.titleCoir fiber as reinforcement in cement-based materialspt_BR
dc.typeCapítulo de livropt_BR
Aparece nas coleções:DCF - Livros e capítulos de livros

Arquivos associados a este item:
Não existem arquivos associados a este item.


Os itens no repositório estão protegidos por copyright, com todos os direitos reservados, salvo quando é indicado o contrário.